// Author: combacsa@kaist.ac.kr
// http://www.jungol.co.kr/prog/Hanal/hanalView.php?qs_code=109

//#define COMPILE
#ifdef COMPILE

#include <fstream>
using namespace std;

int main() {
	ifstream in("input.txt");
	ofstream out("output.txt");
	int a, b, c;
	in >> a >> b >> c;
	out << "합 = " << a + b + c << endl;
	out << "평균 = " << (a + b + c) / 3 << endl;
	return 0;
}
#endif
